package org.jeecg.common.util;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.jeecg.common.handler.IFillRuleHandler;


/**
 * 规则值自动生成工具类
 *
 * @author qinfeng
 * @举例： 自动生成订单号；自动生成当前日期
 */
@Slf4j
public class FillRuleUtil {

    /**
     * @param ruleCode ruleCode
     * @return
     */
    @SuppressWarnings("unchecked")
    public static Object executeRule(String ruleCode, JSONObject formData) {
    	synchronized(FillRuleUtil.class) {
    		if (!StringUtils.isEmpty(ruleCode)) {
                try {
                    // 获取 Service
                    ServiceImpl impl = (ServiceImpl) SpringContextUtils.getBean("sysFillRuleServiceImpl");
                    // 根据 ruleCode 查询出实体
                    QueryWrapper queryWrapper = new QueryWrapper();
                    queryWrapper.eq("rule_code", ruleCode);
                    JSONObject entity = JSON.parseObject(JSON.toJSONString(impl.getOne(queryWrapper)));
                    if (entity == null) {
                        log.warn("填值规则：" + ruleCode + " 不存在");
                        return null;
                    }
                    // 获取必要的参数
                    String ruleClass = entity.getString("ruleClass");
                    JSONObject params = entity.getJSONObject("ruleParams");
                    if (params == null) {
                        params = new JSONObject();
                    }
                    if (formData == null) {
                        formData = new JSONObject();
                    }
                    // 通过反射执行配置的类里的方法
                    IFillRuleHandler ruleHandler = (IFillRuleHandler) Class.forName(ruleClass).newInstance();
                    return ruleHandler.execute(params, formData);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            return null;
    	}
        
    }
}
